Door-knob



(NoModelJ C. M. BROWN. 7

DOOR KNOB.

Patented Mar. 15, 1898.

. JFZHL I ihvrTnn STATES PATENT QFFICEQ CORNELIUS M. BROWVN, OF NEWARK,NEW JERSEY, ASSIGNOR OF ONE- I-IALF TO GEORGE VATTS, OF PLAINFIELD, NEWVJERSEY.

DOOR-KNOB.

SPECIFICATION forming part of Letters Patent No. 600,849, dated March15, 1898.

Application filed April '7, 1897. Serial ITO. 631,078. (No model.)

To ctZZ whom it may concern.-

Be it known that I, CORNELIUS M. BROWN,

a citizen of the United States, residing at Newark, in the county ofEssex and State of New Jersey, have invented certain new and usefulImprovements in Door-Knobs and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being bad to the accompanying drawings, and to lettersof reference marked thereon, which form a part of this specification.

The object of this invention is to enable a knob to serve with greaterconvenience and ease as an advertising medium by displaying aninscription or advertisement from the front thereof such as willdisclose to the person about to open the door any desired information orinstructions, and to secure other advantages and results, some of whichmay be referred to hereinafterin connection with the description of theworking parts.

The invention relates to that class of knobs which are ordinarily usedon. doors, doorplates, drawers, and the like, and relates moreparticularly to the knobs of front doors of residences anddwelling-houses.

The invention consists in the improved hand-knob and in the arrangementsand combinations of parts thereof, all substantially as will behereinafter set forth, and finally embraced in the clauses of the claim.

Referring to the accompanying drawings, in which like letters ofreference indicate corresponding parts in each of the several views,Figures 1 and 2 are transverse sections taken through the center of theknob in planes at right angles to one another. Fig. 3 is a section takenon line 00, Fig. 1. Fig. 4 is a front elevation of the said knob. Fig. 5is a side elevation of a portion thereof, and Fig. 6 shows a series ofinterchangeable inscription plates or cards having printed matterthereon adapted to be set in the face of the knob and give informationto the party about to manipulate said knob.

In carrying out my invention I first provide a hand-knob having theusual shank a and enlarged heads or hand portions b. Said knob may be ofmetal, wood, or any other material and may be of any shape or designsuitable for the purpose. The body or hand portion of the knob is coredout or chambered and is open at the front, so as to disclose the seriesof inscriptionor legend boards, cards, or plates 0 set in said knob, aninscription or advertisement being printed upon said boards, cards, orplates 0, as indicated in Fig. 6. Said plates 0 are fitted into thechamber so as to be firmly held in place and yet conveniently removed toadmit of a change of the advertisement. To obtain an easy convenientinterchange of said plates 0, I have provided a sliding card or platereceptacle d. (Shown in the first four figures'of the drawings.) Saidsliding receptacle 61 may be of any material suitable for i the purpose.It is recessed on its forward side to receive the legend or inscriptionplates, the recess d coinciding with the central opening in the face ofthe knob. Within saidcentral opening, forward of the said slidingreceptacle d, I provide a transparent plate e of glass. This serves toprotect the inscription, legend, or advertisement plates from contactwith the hands and also serves as a keeper for holding the legend-plateswithin the legendplate receptacle. The said glass 6 fits into a rabbetor receptacle therefor in any suitable manner. The said slidingreceptacle within the chamber of the knob, which extends transversely inthe knob, as shown in Fig. 3, is provided with or engages a spring j,which serves to throw the said sliding receptacle outward when released,as heretofore described, so that it may be grasped by the fingers and bewithdrawn or partly withdrawn from the socket or chamber to admit of aninterchange or arrangement of the advertising-plates.

I prefer to limit the withdrawal of the sliding plate or receptacle,so-that it cannot be detached from the knob, and to this end I prefer toprovide either the sliding plate or the hand portion of the knob with agroove f and a suitable stop-pin g to prevent complete withdrawal. Tohold the said receptacle within the socket, so that it will notinterfere with hand manipulation of the knob, I provide the same with akeeper-band 72, arranged in a peripheral slot formed in the knob, thegroove or slot being undercut to receive a dovetail band adapted to beturned within said groove. Said band is provided with an opening throughwhich the said sliding receptacle passes when said opening is broughtinto coincidence with the transverse chamber for the slide, as indicatedin Fig. 3.

By turning the opening in the band into coincidence with the transversechamber or slideway the slide, acted upon by the spring, will be thrownout through said opening a sufficient distance to admit of the handgrasping the end thereof, the said end being somewhat wedge-shaped, soas to freely enter the said opening, and being provided near its eX-tremity with a notch 'i to admit of the thumbnail being entered thereinin drawing the receptacle. By turning the band out of the co: incidenceabove referred to the said band, after the slideis pushed back againstthe spring j at the inner end of the slide way, en'- gages the inclinedbearings of the wedge-like end, so that the said slide is pushed back toits proper relation to the front opening. Being thus brought into propercoincidence with the front opening in the knob the inscription plateswill properly disclose the legend or advertisement thereon to view.

I am aware that various modifications of construction may be madewithout departing from the spirit or scope of my invention, and I do notwish to be understood as limiting myself to the details of constructionshown, excepting as the state of the art may require.

Having thus described the invention, what I claim as new is- 1. Theimproved knob herein described comprising the body portion having ahollow transverse chamber or slideway, a sliding receptacle, areceptacle for legend-plates therein, and an annular band encircling theperiphery of the body portion and open to permit the insertion of thesliding receptacle, substantially as set forth.

2. The improved knob herein described comprising a knob with an openfront and having a chamber opening at one side in which are arrangedremovable legend-plates and a strap like part extending continuouslyaround the periphery of the knob for holding said removable plateswithin the knob, substantially as set forth.

3. The improved knob herein described comprising a knob with an openfront and side and grooved periphery and a continuous ring-like strapclosing said side opening, substantially as set forth.

4.. The improved knob herein described comprising a knob with aninterior chamber and openings at the front and side legendplates, and anencircling strap arranged in a dovetailed groove and holding thelegendplates in said chamber, substantially as set forth.

5: The improved knob herein described comprising a chambered knob, asliding re ceptacle, having an inclined end and an encircling strap orband having an opening for the sliding plate, substantially as setforth.

6. The improved knob herein described comprising a chambered knob, asliding receptacle having an inclined outer end, a spring bearingagainst the inner end, a stop for preventing the complete withdrawal ofsaid receptacle and means for holding the said receptacle within theknob, substantially as set forth.

7. The improved knob herein described, comprising the chamberedknob-body having an open front and a side opening, a sliding platearranged in the chamber of said knob and adapted to be drawn outwardthrough said side opening, and a strap arranged at the side of saidknob, over said side opening, concealing said opening and holding saidsliding plate in place within the knob, substantially as set forth.

8. The improved knob, comprising the chambered knob-body having an openfront and a side opening, a sliding plate arranged in the chamber ofsaid knob and adapted to be drawn out through said side opening, a straparranged at the side of the knob conforming with the circular outlinesthereof, and adapted to be turned thereon to cover said side opening andhold said plate in place, substantially as set forth.

9. The improved knob, comprising the chambered knob-body, open at thefront and side, a sliding plate arranged in the chamber of said body andadapted to be drawn out through the side opening, a spring normallytending to eject said sliding plate through said side opening and astrap adapted to cover said side opening and hold the plate against thepower of the spring, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this25th day of March, 1897.

CORNELIUS M. BROWN. Witnesses:

CHARLES H. PELL, 0. B. PITNEY.

